Video 78: Querying Documents

task-manager/mongodb.js

@@ -1,7 +1,6 @@
 // CRUD create read update delete
 
-const mongodb = require('mongodb')
+const { MongoClient, ObjectID } = require('mongodb')
-const MongoClient = mongodb.MongoClient
 
 const connectionURL = 'mongodb://127.0.0.1:27017'
 const databaseName = 'task-manager'
@@ -13,50 +12,23 @@ MongoClient.connect(connectionURL, { useNewUrlParser: true }, (error, client) =>
 
   const db = client.db(databaseName)
 
-  // db.collection('users').insertOne({
+  // db.collection('users').findOne({ _id: new ObjectID('5db632720a8c580049920f36') }, (error, user) => {
-  //   name: 'Jason',
-  //   age: 38
-  // }, (error, result) => {
   //   if (error) {
-  //     return console.log('Unable to insert user')
+  //     return console.log('Unable to fetch')
   //   }
   //
-  //   console.log(result.ops)
+  //   console.log(user)
   // })
 
-  // db.collection('users').insertMany([
+  // db.collection('users').find({ age: 38 }).toArray((error, users) => {
-  //   {
+  //   console.log(users)
-  //     name: 'Jen',
-  //     age: 28
-  //   },
-  //   {
-  //     name: 'Gunther',
-  //     age: 27
-  //   }
-  // ], (error, result) => {
-  //   if (error) {
-  //     return console.log('Unable to insert documents')
-  //   }
-  //
-  //   console.log(result.ops)
   // })
 
-  db.collection('tasks').insertMany([
+  db.collection('tasks').findOne({ _id: new ObjectID('5db5f0ef9d71180110fd3162') }, (error, task) => {
-    {
+    console.log(task)
-      description: 'Install MongoDB',
+  })
-      completed: true
-    },{
-      description: 'Complete the challenge for Video 76',
-      completed: false
-    },{
-      description: 'Learn NodeJS',
-      completed: false
-    }
-  ], (error, result) => {
-    if (error) {
-      return console.log('Unable to insert documents')
-    }
 
-    console.log(result.ops)
+  db.collection('tasks').find({ completed: false }).toArray((error, tasks) => {
+    console.log(tasks)
   })
 })